Can you exactly state the measure of circumference for a circle?

Question

You have a patch of dead shrubs you want replaced with sod. But there's a hornet's nest in the middle, and therefore to avoid
getting stung you can't measure the radius or diameter to plug into the formula: area = pi r squared.

And in order to get a price quote from the landscaper you need the square footage.

You can however easily measure the circumference.

Question: what is the area of this circle of dead shrubs if the circumference is 100 ft?

Answer 1

The circumference of a circle is the distance around the outside of the circle.
It can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.

Answer 2

The lenght of the circumference is given by : 2 x pi x r
being Pi = 3,1416..... and r = radius of the circle